<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>02_函数式组件</title>
    <link rel="shortcut icon" href="../../favicon.ico">
</head>
<body>
<div id="test"></div>

<!--引入react核心库-->
<script src="../js/react.development.js"></script>
<!--引入react-dom，用于支持react操作DOM-->
<script src="../js/react-dom.development.js"></script>
<!--引入babel，用于将jsx转为js-->
<script src="../js/babel.min.js"></script>

<script type="text/babel">
    // 1、创建组件
    class Weather extends React.Component {
        // 初始化状态
        state = {isHot: false, wind: '大风'};

        render() {
            const {isHot, wind} = this.state;
            return <h1 onClick={this.changeWeather}>今天天气很{isHot ? '炎热' : '凉爽'},今天有{wind}</h1>;
        }

        // 自定义方法--要用赋值语句的形式+箭头函数
        changeWeather = () => {
            this.setState({isHot: !this.state.isHot}, () => {
            });
        }
    }

    // 2、渲染组件到页面
    ReactDOM.render(<Weather/>, document.getElementById('test'));
</script>
</body>
</html>